LHR, LGW, Stansted is approx. 900,000 annual movements. I don't know the traffic at other local airports.
JFK, LGA, EWR, TEB, HPN, ISP, SWF is about 1,750,000 annual movements.
JFK/LGA/EWR are 18 nm apart. 1,170,000 movements. Add in TEB, overflown by EWR arrivals on base leg, and it's 1,340,000 movements.
The LA basin has over 3,000,000 movements.
Last edited by misd-agin; 7th Jan 2016 at 02:53.
Reason: local airports...